Origins, insertions + actions of posterior thigh

Question 1

Semimembranosus

Answer 1

Origin: Ischial tuberosity.
Insertion: Medial condyle of tibia.
Action: Knee flexion, Medial rotation of leg + hip extensions.
NS: Sciatic tibial nerve.
BS: Deep femoral artery.

Question 2

Short head of bicep femoris

Answer 2

Origin: Linea Aspera.
Insertion: Head of the fibula.
Action: Knee flexion + lateral rotation of leg.
NS: Common fibular nerve.
BS: Deep femoral artery.

Question 3

Semitendinosus

Answer 3

Origin: Ischial tuberosity.
Insertion: Pes Ansirenus.
Action: Knee flexion, medial rotation of leg + hip extension.
NS: Sciatic tibial nerve.
BS: Deep femoral artery.

Question 4

Long head of bicep femoris

Answer 4

Origin: Ischial tuberosity.
Insertion: Head of fibula.
Action: Knee flexion, lateral rotation of leg + hip extension.
NS: Sciatic tibial nerve.
BS: Deep femoral artery.